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Old 09-21-2019, 04:12 PM   #1
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Fleetwood Owners Club
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Posts: 132
Oil choices

We have a 2005 Bounder, Ford F53 with a 6.8L V10 engine. It has right at 46K miles on it and runs very good.
Question we purchased it used and the previous owner always used Valvoline Full Synthetic 10w30 oil in it. Not sure why. My self growing up we only used straight 30W. Have changed that choice with the times as now most manuals say 5w20.
I speculate the Previous owner used 10/30 as the vehicle spent time between Florida and Indiana or just his preference, I have used the same garage for service he did and just followed his previous work orders. 10/30 full syn. I am now going to change the oil myself. When looking at owners manual to get filter info I see it says to use Ford 5W20 and a Ford filter. have researched the filter and if it is what it says, seems it would be a good filter.
Now the oil I want to go with 5W20 and use full synthetic. Do you think I would be safe going from 10W30 to 5W20, dont want to cause any future problems. I have always used Valvoline but like what I read about Mobile 1. Thinking of that change too. I have read you have to be careful changing brands as some have different additives like detergents and such. Your knowledge, thoughts and opinions on weight and brand would be appreciated.

2005 Fleetwood Bounder 35E, Ford F53, 2012 Jeep Wrangler Toad. 50 AMP,Surge Guard 34750, Blue OX Tow Bar. SAFE T PLUS. Atwood hot water heater, Brake Buddy.
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Old 09-21-2019, 04:27 PM   #2
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shoot for something in the 75-90K psi range
Do at least one oil sample and dont try for extended oil change intervals.

Actually the generic amazon isnt bad - https://www.amazon.com/AmazonBasics-.../dp/B07C5FF8R5

And there is really no reason to go with 20anything other than just some marketing BS that maybe frees up about .05 MPG .. A good 5-30 will support 5000 to 6000mile OC internvals as long as temps dont go above about 250 consistently.

2003 Scepter 40PDBB - Roadmaster rr8s - Cummins ISC350 - purch aug16
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Old 09-21-2019, 05:45 PM   #3
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I like to keep things simple. I use the viscosity Ford says to use.
Tom Wilds
Blythewood SC
2016 Newmar Bay Star Sport 3004
2015 Jeep Wrangler 2DR 4WD Sahara, Automatic, Hard Top
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Old 09-22-2019, 04:07 AM   #4
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Personally, I don't think you'll have any problems using different weights, brands, or synthetic..

I change oil every 5k miles. Since I bought my Southwind used a couple years ago, its burned 1 qt of oil every 1200 miles. So if I go over a thousand miles or so, I don't worry about it as it gets fresh quart ever 1200 miles.

I use dead dinosaur 5w20, mainly because I operate my Southwind during the winter months. (I tried 10w30 to see if this would reduce the oil consumption, it didn't.)

Motorcraft filter FL820S $3.50 from Rock Auto
1999 Fleetwood Southwind 35S (Ford F53 6.8L V10 275hp 4R100 4 spd trans) - Toad 2003 Saturn Vue.

It won't do MACH 2, but I can get a sandwich and take a pee.
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